Editing Period 6 element (section)

===Tantalum===
{{main|Tantalum}}
'''Tantalum''' is a [[chemical element]] with the symbol '''Ta''' and [[atomic number]] 73. Previously known as ''tantalium'', the name comes from ''[[Tantalus]]'', a character from Greek mythology.<ref>[[Euripides]], ''[[Orestes (play)|Orestes]]''</ref> Tantalum is a rare, hard, blue-gray, [[lustre (mineralogy)|lustrous]] [[transition metal]] that is highly corrosion resistant. It is part of the [[refractory metals]] group, which are widely used as minor component in alloys. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for [[platinum]], but its main use today is in [[tantalum capacitor]]s in [[electronics|electronic]] equipment such as [[mobile phone]]s, [[DVD player]]s, [[video game systems]] and [[Personal computer|computers]].
Tantalum, always together with the chemically similar [[niobium]], occurs in the [[mineral]]s [[tantalite]], [[columbite]] and [[coltan]] (a mix of columbite and tantalite).